Vision tester



FIG. 1 is a perspective view of a vision tester, showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof, the rear being plain and unornamented;

FIG. 4 is a side elevational view thereof, the opposite side elevational view being identical thereto;

FIG. 5 is a bottom plan view thereof; and,

FIG. 6 is a cross-sectional view taken along line 6--6 of FIG. 2. 

The ornamental design for a vision tester, as shown and described. 